Overlake Village South Detention Vault Project

Overlake Storm Vault

  15010 NE 20th Street
Project Phase: Complete
Timeline:  Project completed in July 2015
Contact: Joe O'Leary, Construction Project Manager, 425-556-2723
Steve Hitch, Senior Stormwater Engineer, 425-556-2891

In July 2015, the South Detention Vault was completed on time and under budget.  Overlake Village is now home to the largest stormwater detention vault in Washington State, capable of detaining millions of gallons of stormwater runoff.  It might be hard to believe all that is happening beneath the parking lot!

The vault has a total volume of 20 acre feet (about 6.6 million gallons). Park facilities will be constructed on top of the stormwater vault in the future. In the meantime, the property owner will use the area over the vault for parking.

The South Detention Vault is the first of three regional stormwater facilities to be constructed in Overlake Village.  It detains stormwater that has been treated locally within public rights-of-way and private development areas.

Project-Specific Information

July 20, 2015 Project completed.
March 4, 2014 Council awards Phase 2 construction bid to Goodfellow Bros., Inc.
February 18, 2014 Council Final Acceptance: Phase 1 Utility Relocation Project
June 18, 2013 Utility Relocation project awarded to Shoreline Construction Co. by Council
April 23, 2013              Project Newsletter
April 17, 2013 Overlake Village Utility Relocation Plans
Dec 19, 2012           Stormwater Alternatives Analysis Report
Sept 5, 2012                 Geotechnical Engineering Report - GeoEngineers, Inc.
Nov 4, 2011    Project Newsletter
June 14, 2011   Overlake Facilities Overview Map
Mar 10,  2011    Consultant Selection Process Information Meeting Presentation
Feb 22, 2011 Preliminary Geotechnical Design Services Report
Nov 2010           Groundwater Elevations
Aug 31, 2010 Proposed Infrastructure Concept